German submarine UB 106 under repair at the Kaiserliche Werft, Kiel, Germany in 1918

A list dealing dated 12 July 1918 reported the status of work on the submarines expected on 14 July. Work started on 22 March. Planned completion on unknown. Description of the work repairs.Remarks Postponed indefinitely because the return of electrical instruments for repair was not yet foreseeable.

Source

Bundesarchiv RM 3-11254.